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cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits.: ia64

Browse source 
Impact: cleanup, futureproof

In fact, all cpumask ops will only be valid (in general) for bit
numbers < nr_cpu_ids.  So use that instead of NR_CPUS in various
places.

This is always safe: no cpu number can be >= nr_cpu_ids, and
nr_cpu_ids is initialized to NR_CPUS at boot.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Rusty Russell 2009-03-16 14:12:42 +10:30
parent 40fe697a17
commit 5dd3c9949a
8 changed files with 18 additions and 18 deletions
Download patch file Download diff file Expand all files Collapse all files

4
arch/ia64/kernel/perfmon.c
View file

@ -5603,7 +5603,7 @@ pfm_interrupt_handler(int irq, void *arg)
* /proc/perfmon interface, for debug only
*/
#define PFM_PROC_SHOW_HEADER ((void *)NR_CPUS+1)
#define PFM_PROC_SHOW_HEADER ((void *)nr_cpu_ids+1)
static void *
pfm_proc_start(struct seq_file *m, loff_t *pos)
@ -5612,7 +5612,7 @@ pfm_proc_start(struct seq_file *m, loff_t *pos)
return PFM_PROC_SHOW_HEADER;
}
while (*pos <= NR_CPUS) {
while (*pos <= nr_cpu_ids) {
if (cpu_online(*pos - 1)) {
return (void *)*pos;
}